Turbine blade and vane.



H. S. LOUD, 62 J., PANTER. TURBINE BLADE AND VANE- APPLIOATIO! rum JULY14, 1909.

953,016. Patented Mar.22,1910.

IN VENTORS UNITED STATES PATENT OFFICE.

HENRY SHERMAN LOUD, OF MORRISTOWN, NEW JERSEY, AND JOSEPH PANTER, OF

STRETFORD, MANCHESTER, ENGLAND, ASSIGNORS TO THE WESTINGHOUSE MA- CHINECOMPANY, A CORPORATION OF PENNSYLVANIA.

Original application filed April July 14, 1909.

To all whom it may concern:

Be it known that we, HENRY SmmMAN Loun and JOSEPH PANTER, citizens ofthe United States, and residents, respectively, of Morristown, Morriscounty, in the State of New Jersey, United States of America, andStretford, Manchester, in the county of 7 Lancaster, En land, have madea new and bine which receive the working fluid are is adapted to more orless snu ordinarily termed buckets or blades, and the stationarydirecting elements are termed vanes.

Our invention relates to means which are equally effective in mountingthe blades on the rotor element or varies in the stator element, and forthat reason and also for the sake of brevity we will hereinafter use theterm rotating blades and the stationary vanes.

- In the drawingv accompanying this application and forming a partthereofaFigure 1 is a perspective view of a plurality of blades mountedin a portion of a bladeholding element. Figs. 2 to 5 inclusive, aredetail views of modifications of our invention, and Fig. 6 is asectional view of a detail of our invention.

In each of the figures the blade mounting element is provided withgrooves or slots into which the ends of the blades may be introducedandspread apart to be locked in the grooves by being distorted. Eachblade 20, is provided with a distortable end which ly fit into thegroove 27 formed in the blade-mounting elements 23.

Specification of Letters Patent.

20, 1907, Serial No. 369,283. Divided and this application filed SerialNo. 507,559.

the swaged end 26 of each Patented Mar. 22,. 1910.

Referring to Figs. 2 and 3 it will be observed that each slot or groove27, is provlded with two expansion wedges 31, and

blade is provided w th two slots 29. The blade is secured to themounting element 23 by the wedge 31, which expands or distorts theblades so that they will fit into the undercut portions of the slots 27.In forcing the blades into place by the wedges 31 in the slots 27 theswaged ends are caused to expand into gripping contact with the undercutwalls so that any liability of the blades pullin out will be prevented.

In igs. 4 and 5 a modification is shown in which only one side of theslot 27 is undercut and in which but one expansion strip or wedge piece31, is utilized. The swaged end of the blade 26 is provided with a slot29, but the slot is located at one side of the mounting portion. By suchan arrangement the blade is secured in place by forcing the portion ofthe swaged end into gripping contact with the undercut wall of the slotthrough the agency of the expansion strip 31. With this arrangement themajor portion of the swaged end is undistorted.

In Fig. 6 a sectional elevation of an expansion strip is shown. Thestrip is provided with longitudinally extending ridges which cause it tomore firmly grip the adjacent faces of the swaged end portions of theblades.

In Fi 1 the invention is shown in which the wedge shaped member 31 ismounted in a slot 32, which is cut in the inner face of the slot 27. Theswaged portions 26 of the blades are of such shape that when the bladesare in place and secured to the member 23 by any one of the methodsdisclosed,

the working faces of the blades will be.

turned to the correct angle for eflicient operation, thereby overcomingthe necessity of gaging the blades.

In all of the forms shown, the ends of the blades are secured in placeby being expanded over an expansion piece or strip which is located inthe bottom of the recess formed in the mounting element of the turbine.

What we claim'is:

In combination in an elastic fluid turbine, a blade holding element, amounting element provided with a blade-holding slot, ablade providedwith a swaged mounting portion located within said slot, a groove at thebottom of said slot and an agent, located in said groove and cooperatingwith said swaged mounting portion to secure said blade into said slot.

In witness whereof, I have hereunto subscribed my name this 15th day ofJune 1909.

HENRY SHERMAN LOUD.

' Witnesses:

WM. H. OAPEL, ROBERT HARRISON.

In witness whereof, I have hereunto subscribed my name this 2nd day ofJuly 1909.

JOSEPH PANTER. Witnesses:

N. H. SHEARD, JAS. STEWART BROADFOOT.

